Shutter-fastener



-J. A. BAGHMAN.

ENER.

N0.A3,'72L 1.A Patented Mar. 19, 1889.

UNTTED STATES PATENT GEEICE.

JOSEPH A. BACHMAN, OF AUSTIN, TEXAS.

sHUTTER-FAsTr-:NER-

SPECIFICATION forming part of Letters Patent No. 399,724, dated March 19, 1889.

Application filed August 17, 1888. Serial No. 283,021. (No model.)

To aZZ whom, t may concern:

Be it known that I, JosErH A. BACHMAN, a

citizen of the United States, residing at Austin, in the county of Travis and State of Texas, have invented certain new and useful lmprovements in Shutter or Outside-Blind Fastenings; and l do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to an improvement in fastenings for outside blinds, shutters, or the like, and the purpose of my device is to provide a fastening that cannot be unlocked from the outside, even though slats be' cut from the blinds or shutters' to which the fastening is applied and two hands and arms are thrust through within reach of the said fastening.

My fastening has two catching-latches, one locking and holding latch, and one bolt, all to be operated simultaneously when the blind is closed against the sill, in order that said blind may be released and opened.

The holding-bolt of the fastening is capable of a vertical movement, while the locking and holding latches may be moved horizontally to release the vertically-movable bolt. The iirst and second fingers of the left hand and the second iinger of the right hand are employed in moving the horizontally-movable latches, while the. thumb of the right hand serves to lift the bolt so that the shutter may be opened. It will be readily understood that no one from the outside of the shutter would be able to manipulate the three latches and the bolt simultaneously, and such an action would be absolutely necessary in order for an outsider to effect an entrance by the act of unbolting.

1n my drawings illustrating my invention, Figure l is a plan view taken horizontally through the shutter, showing the bolt and latches in proper relation. Fig. 2 is a vertical transverse section taken through the blind and sill of a window. Fig. 3 is a plan view of the fastening as seen from the under side.

Similar reference-letters indicate like parts in all ot' the figures.

Referring to the drawings, A B C are the three arms of the sill-plate provided with cavities or recesses, formed from the under side,

and through-cut openings to receive the three latches a o c, all of which have shoulders to bear against and slide in suitable grooves formed in the respective arms of the sillplate. The said latches a b c have spindles a b c', and clasping these are suitable spiral springs which bear between shoulders of the plate and shoulders of the said latches, keeping the latter, with their ends d c f, normally near together. The latches d and c may be termed catching latches, and the one b the holdin glatch. The latches a and c, it will be noticed, have pointed ends, so that they form, together with the sill-plate, a space of dovetail form, while the holding-latch b has its end of rectangular form. All three of the latches 'a l) c are cut away from underneath to give place to the lower end or foot of the verticallymovable bolt.

D is the plate for the bolt, formed with a cavity in its back of a form not unlike the cavities of the sill-plate A B C.

d is the bolt formed with shoulders on its back to fit into the grooves upon which it slides, and provided with a spindle, cl3, about which is coiled a spiral spring, 2, the ends of which bear against the body of the bolt d and a suitable shoulder formed in the plate D. The bolt d at its bottom end is formed into an upwardly-projecting foot, e, and above this Jfoot on opposite sides are recesses f f', leaving the part of the said bolt immediately above the foot e of a dovetail form, like the recess.

between the inner ends of the catching-latches d c. At the back of the bolt d is a V-shaped notch, g, which, when the said bolt is down to a locked position, fits against the front shoulder of the plate A B C.

The plate A B C at C is beveled to deflect the bolt d upward as the shutter is drawn to a shut position, and the plate D is beveled at its bottom end to bear, when the shutter is closed, snugly against the beveled surface C of the plate A B C.

The sill-plate and shutter-plate are both provid ed with screw-holes, through which pass screws to hold the said plates to respective parts-viz., the shutter and the sill.

h h h2 h3 represent thumb-pieces, parts of the latches, and bolt, formed in any suitable manner to render them convenient to handle.

The spiral springs t' t t', bearing against the IOO g abutments T of the'sill-plate, keep the ends of the latches normally close together, as before intimated, and the Spring 112 keeps the bolt d normally down. Vhen the shutter is drawn to, the front of the bolt d contacts with the bevel front C of the sill-plate, and the sill and shutter being each iiXed the bolt is thrown up against the tension of the spring i?. The somewhat pointed end of the foot of the bolt now coming in contact with the latches a b c, they are thrown back against the force of the springs c' i z' until the foot @of the bolt passes the bevel part C of the plate A B C. The spring i2 being now relieved forces the bolt downward, and simultaneously therewith the catchinglatches and holding-latch, iniiuenced by their springs, close upon the bolt and hold it firmly.

It will be noticed that the plate A B C has stops that limit the movements of the catching and holding latches in their forward as well as in their backward action.

The two hands, by the thumb and three iingers of a person within the house, may with a very little practice be enabled readily to release the bolt, so that the shutter may be opened.

I have devised a modification of the invention just described, in which I use, together with the bolt of the shutter, two latches similar to what I call the catching-latches, and have left out the holding-latch; but with this modification it would be possible, with a good deal of difficulty, however, for a person, by breaking the slats of two blinds, to manipulate the bolt and these two latches and eifect an entrance to a building through the window; and although this modiiication is inferior to my triple-latch arrangement, I desire to have it understood that I have in mind the double-latch device while I make application for this one, which I consider superior and covering both forms.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. The combination, with the plate A B C, secured to a sill, provided with suitable cavities or recesses and through-cut openings and ways, of the latches, movable horizontally in said ways by suitable springs toward a common point, of the plate D, secured to a shutter provided with suitable cavities or recesses and through-cut openings, and the verticallymovable bolt infiuenced by a suitable spring toward the center of approach for the three latches, as and for the purpose set forth.

2. The combination, with the verticallymovable boli', suitably housed, having an inwardly-projecting pointed foot opposite recesses and a notch in its rear, substantially as described, of the horizontally-movable latches, suitably housed, two of which have their ends cut away to form a dovetail space, as set forth, and the three being provided with undercut notches, as and for the purpose specified.

In testimony whereof I affix my signature in presence of two witnesses.

JOSEPH A. BACHMAN.

Witnesses: i

A. GIEsEN, WILLIAM F. NORTH. 

